- This is the first and only appearance of The Sandman. He does not appear in the series again, even when other magical beings are gathered together.
- Apparently Cosmo and Wanda act and look cranky when they don't get any sleep for too long.
- In this episode, it reveals that fairies don't float when they sleep, which is true for every episode that has fairies sleeping.
- Everyone is tired because they didn't sleep, except a robot, Timmy, The Sandman, and a lady with her daughter.
- Later airings added extra scenes of people falling asleep.
- This is the first episode where George Goodchild is the main art director.
- This episode is similar to the book, "Up All Night".
- Transformers - The street cleaner that turns into a robot is a reference to the toy line, the washing truck robot parodies "Optimus Prime".
- Iron Man - When Timmy hasn't slept for 7 days, he becomes ugly and Wanda gave Timmy a Mark I helmet.
- Dexter's Laboratory - Timmy and Dexter both wanted to stay up late only to be rejected by their parents because of their age.
- In this episode, the Sandman does not float except after both Cosmo and Wanda are asleep through the end of that scene.
- When Timmy meets the Sandman it is morning, but when he makes the wish for everyone to be able to sleep again, it is night.
- Everyone should have been able to sleep since Timmy's wish was "I wish everybody didn't have to sleep!", yet the episode made it look as if Timmy wished that everybody couldn't sleep.